diff --git a/propositions/migrations/0006_proposition_profile_to_user.py b/propositions/migrations/0006_proposition_profile_to_user.py
new file mode 100644
index 0000000..d0ebd6a
--- /dev/null
+++ b/propositions/migrations/0006_proposition_profile_to_user.py
@@ -0,0 +1,53 @@
+# Generated by Django 2.2.9 on 2020-01-05 16:28
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+def move_profile_to_user(apps, schema_editor):
+    Proposition = apps.get_model("propositions", "Proposition")
+    for proposition in Proposition.objects.all():
+        proposition.user = proposition.profile.user
+        proposition.save()
+
+
+def move_user_to_profile(apps, schema_editor):
+    # One should do something similar to ``move_profile_to_user`` AND make the
+    # ``profile`` field temporarily nullable in the operations below.
+    # => Grosse flemme
+    raise NotImplementedError("Who uses migrations backwards anyway?")
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("propositions", "0005_remove_nb_yes_no_fields"),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name="proposition", old_name="user", new_name="profile"
+        ),
+        migrations.AddField(
+            model_name="proposition",
+            name="user",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                to=settings.AUTH_USER_MODEL,
+                verbose_name="Proposé par",
+                null=True,
+            ),
+        ),
+        migrations.RunPython(move_profile_to_user, move_user_to_profile),
+        migrations.RemoveField(model_name="proposition", name="profile"),
+        migrations.AlterField(
+            model_name="proposition",
+            name="user",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                to=settings.AUTH_USER_MODEL,
+                verbose_name="Proposé par",
+            ),
+        ),
+    ]
diff --git a/propositions/models.py b/propositions/models.py
index 0ff1f74..1c6dcfa 100644
--- a/propositions/models.py
+++ b/propositions/models.py
@@ -1,6 +1,5 @@
 from django.contrib.auth import get_user_model
 from django.db import models
-from gestion.models import ErnestoUser
 
 User = get_user_model()
 
@@ -8,9 +7,7 @@ User = get_user_model()
 class Proposition(models.Model):
     name = models.CharField(max_length=100, verbose_name="nom du morceau")
     artist = models.CharField(blank=True, max_length=100)
-    user = models.ForeignKey(
-        ErnestoUser, on_delete=models.CASCADE, verbose_name="Proposé par"
-    )
+    user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name="Proposé par")
     link = models.URLField(blank=True)
 
     def __str__(self):
diff --git a/propositions/tests.py b/propositions/tests.py
index b8493f2..087feeb 100644
--- a/propositions/tests.py
+++ b/propositions/tests.py
@@ -43,7 +43,7 @@ class PropositionCreateTest(TestCase):
         self.assertEqual(proposition.name, "foo")
         self.assertEqual(proposition.artist, "bar")
         self.assertEqual(proposition.link, "http://example.com")
-        self.assertEqual(proposition.user, user.profile)
+        self.assertEqual(proposition.user, user)
 
 
 class PropositionDeleteTest(TestCase):
@@ -54,7 +54,7 @@ class PropositionDeleteTest(TestCase):
         self.chef.profile.is_chef = True
         self.chef.profile.save()
 
-        proposition = Proposition.objects.create(name="prop", user=self.owner.profile)
+        proposition = Proposition.objects.create(name="prop", user=self.owner)
         self.url = reverse("propositions:delete", args=(proposition.id,))
 
     def test_anonymous_cannot_get(self):
@@ -110,10 +110,10 @@ class PropositionListTest(TestCase):
     def setUp(self):
         self.user = new_user("toto")
         for name in ["foo", "bar", "baz"]:
-            p = Proposition.objects.create(name=name, user=self.user.profile)
+            p = Proposition.objects.create(name=name, user=self.user)
             Answer.objects.create(proposition=p, user=self.user, answer=Answer.YES)
         for name in ["oof", "rab", "zab"]:
-            p = Proposition.objects.create(name=name, user=self.user.profile)
+            p = Proposition.objects.create(name=name, user=self.user)
             Answer.objects.create(proposition=p, user=self.user, answer=Answer.NO)
 
     def test_anonymous_cannot_get(self):
@@ -131,7 +131,7 @@ class PropositionListTest(TestCase):
 class ReponseTest(TestCase):
     def setUp(self):
         self.user = new_user("toto")
-        self.prop = Proposition.objects.create(name="foo", user=self.user.profile)
+        self.prop = Proposition.objects.create(name="foo", user=self.user)
 
     def _url(self, rep):
         assert rep in Answer.REP_CHOICES
diff --git a/propositions/views.py b/propositions/views.py
index 13251f1..6947afb 100644
--- a/propositions/views.py
+++ b/propositions/views.py
@@ -17,7 +17,7 @@ class PropositionCreate(LoginRequiredMixin, CreateView):
 
     def form_valid(self, form):
         proposition = form.save(commit=False)
-        proposition.user = self.request.user.profile
+        proposition.user = self.request.user
         proposition.save()
         return HttpResponseRedirect(self.success_url)
 
@@ -44,7 +44,7 @@ class PropositionDelete(LoginRequiredMixin, UserPassesTestMixin, DeleteView):
     def test_func(self):
         proposition = self.get_object()
         user = self.request.user
-        return (proposition.user == user.profile or user.profile.is_chef)
+        return (proposition.user == user or user.profile.is_chef)
 
 
 @login_required